Goldkrand J W, Kuhlman T, Fox E, Foggo B M
Department of Obstetrics and Gynecology, Albany Medical Center, New York.
J Ultrasound Med. 1990 Oct;9(10):555-7. doi: 10.7863/jum.1990.9.10.555.
The traditional ultrasonically derived fetal biparietal diameter (BPD) is important in the determination of fetal age, weight, and growth. This measure cannot be obtained, however, with direct occiput anterior or posterior or with a head in the pelvis. This study looked at the BPD utilizing coronal (anatomically at right angles to the traditional BPD through the thalami, third ventricle, and cavum septum pellucidum) rather than transverse section through the fetal head. In 265 patients at 14 to 41 weeks' gestation, simultaneous measurement of the coronal and transverse BPDs revealed that they were interchangeable (r = 0.99). The major drawback of the coronal BPD is the inability to obtain a head circumference because of the absence of the occipitofrontal diameter.
传统超声测量的胎儿双顶径（BPD）对于确定胎儿年龄、体重和生长情况很重要。然而，当胎儿为枕前位或枕后位直接入盆时，无法获得该测量值。本研究采用冠状面（通过丘脑、第三脑室和透明隔腔，在解剖学上与传统双顶径呈直角）而非胎儿头部的横断面来观察双顶径。在265例妊娠14至41周的患者中，同时测量冠状面和横断面的双顶径发现二者可相互替代（r = 0.99）。冠状面双顶径的主要缺点是由于缺乏枕额径而无法获得头围。
